.register{
  width: 400px;
  height: 500px;
  margin: 0 auto;
  font-size: 16px;
  line-height: 30px;
  padding: 10px;
  color: #333;
  overflow: hidden;
  box-shadow: 0 0 5px #666;
}

.title{
  color: #222;
  font-weight: 700;
}

.msg{
  width: 300px;
  padding: 10px;
  min-height: 30px;
  border: 1px solid gray;
  margin: 0 auto;
  display: none;
}
.tips{
  color: orangered;
  line-height: 1;
}
.register_form{
  width: 300px;
  padding: 30px;
  box-sizing: border-box;
  margin: 20px auto;
  border: 2px solid #ddd;
}
.register_form input{
  width: 100%;
  height: 30px;
  outline: none;
  
}
.register-btn{
  width: 100%;
  height: 40px;
  margin-top: 30px;
  color: #fff;
  background-color: tomato;
  border: none;
}